Printing type



K. :Hmmm-MRA PRINTING TYPE Filed Feb. 18. 1,927

9" VMJ Patented Jan. 24,

TES

PATENT OFFICE.

KIKUJIU SHINOHABA, OF TOKIO, JAPAN, ASSIGNOR OF ONE-HALF TO SHICHIROKAJIHARA, OF TOKIO, JAPAN.

PRINTING TYPE.

Application tlled February 18, 1927, Serial No. 169,294, and in JapanJuly 17, 1926.

This invention relates to im rovements in a printing or movable type anaims to provide an inexpensive and4 vet exceedingly durable andeffective article of manufacture of this sort.

According to the invention a printing or movabletype is made of glass,instead of lead, as heretofore it. has been.

The type according to the invention is. on account of this fact, lessexpensive than that made of lead, lighter in Weight, harder in its con'-sistency, and therefore its face does not wear off, being good forservice for long years.

It not only removes the fear of lead poisoning but glves a sort the menat Work bec of sense of pleasure to ause of the transparent nature ofthe material and consequently it fatigues those who handle it to a farless degree than ivth the type made of lead.

make it easier to be type picking handled by a metallic implement.

In the printing types according to the invention, especially those withfrosted lateral surfaces, the assembling and set-tine can be Worked outvery easily because of the light ness of the weight. given to the groupthe adjoining types the4 Whole group of If a slight moisture be oftypes, it will make stick together, so that types will solidify to oneconcrete block, so to speak, which fact Will greatly facilita the rostin te the assembling. ln

or grinding operation of the newly mol ed types the cross sectionalarea. may be regulated, by means of this same operation, to suit t becondition of actual use, which is one of the advantages of theinvention. Also by frosting the lateral surfaces, the reflection oflight rays therefrom may be avoided, thereby making the character of thetype appear in relief in a very prominent fashion owing to thereflection of light at the face thereof. This fact not only makes thesearch easier but gives also a. sense of pleasure to the men at work.

The glass type according to the invention has also advantages overthe'lead type in that the classification of types with reference to thestyle of characters may be made by imparting simply differentcolorations t-o the material composing the printing types. Thecoloration may be carried out, as is Well known,` by adding a suitablemetal compound to fused glass before molding.

The drawing annexed hereto shows, by Way of example, a perspective viewof a printing type`l accor( ing tothe invention, in which 1 are lateralsurfaces and 2 a face or character.f ln this invention lat-eral surfaces1 should preferably be frosted. As to the method of frosting, it can bedone by any suitable method, either mechanically by means of emerypowder, for example, or chemically by corrosion with hydrogen fluoride.

l/Vhat lf claim is:

A movable printing type, consisting of a block of glass comprising botha body portion and a type character, at least one of the lateral facesof the body portion being frosted to avoid reflection of light raysthere; from and thereby throw the type character into bold relief and atthe same time to increase the coehcient of friction of such face.

fn testimony whereof afx m. signature.

